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Message: [QUOTE="Big Bore, post: 463091, member: 760"] The OBS has a regulated return. The SD is a dead head. That's why there are several regulated return kits on the market for the SD. If you want to upgrade your fuel system to a SD electric pump, you may as well just build a fuel system with better fuel lines than the tiny copper lines you have now, there are several ways to do it and several threads in the 7.3 performance forum, and as I mentioned several kits on the market. Most involve a pre and post filter mounted under the truck deleting the bowl on the engine. [/QUOTE]

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